titanic thursday, page-35

Laundry's straight time symmetry from
Oct 07 High -> Mar 09 Low -> Aug 10 high, 17months each step is interesting.

Ferreras model looks good, seems like straight addition of 4 sineusoids, plus(?) a sawtooth.

Yet to check if the coefficients in front of his cycles vary in time, and/or whether the wavelengths also vary as time progresses, would allow greater flexibility.

China's increasing influence and different style of economics are bound to change the systems resonance frequencies to some extent.